I had thought that the Way to Dawn was originally the Souleater but i guess I was wrong. I also found it weird that the Way to Dawn was in the concept trailer or w/e it is. Now i know that its just symbolism.
How is the way to dawn in the trailer which is supposed to be ten years earlier if riku somehow transforms the soul eater into it in KHII. If there was a scene in KHII explaining how he actually transformed it i missed it.